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mezya [45]
3 years ago
12

Problem #1: Mrs. Grape has 90 students. On her last test, 3/10 of these students earned an A. Of those students, 1/9 got a perfe

ct score. How many students got a perfect score?
Mathematics
1 answer:
fredd [130]3 years ago
7 0

Answer:

3 students got a perfect score.

Step-by-step explanation:

Total number of students in Mrs. Grape's class = 90

Number of students who earned an A = 3/10 of 90

= \frac{3}{10}\times 90

= 27 students

Out of 27 students the number of students who got perfect score

= \frac{1}{9}\times 27

= 3 students

3 students got a perfect score.

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A proportion is a fraction of a total amount, and the measures are related using a rule of three.

In this problem, during the transformation, each coordinate was divided by 3, hence, applying the proportion, the scale factor of the transformation is of 1/3.

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8 0
2 years ago
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strojnjashka [21]

Answer:

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3 years ago
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Answer:

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